TDA4885 Datasheet, PDF (32/56 Pages) NXP Semiconductors – 150 MHz video controller with I2C-bus

Philips Semiconductors
150 MHz video controller with I²C-bus
Product specification
TDA4885
handbook, full pagewidth
(1) Only synchronized video should
be displayed.
Each new mode can be
displayed by OSD.
It is recommended to
synchronize data transmission
(brightness, contrast and OSD
contrast) with vertical blanking
pulse.
1997 Nov 25
START
LOAD PRESET CONTROL BITS
FPOL
PEDST
DISV = 1
DISO = 1
load from program
ROM code or EEPROM
LOAD FACTORY SETTINGS
GAIN
(CHANNEL 1, 2, 3)
FEEDBACK REFERENCES
(CHANNEL 1, 2, 3)
load from EEPROM
LOAD USER PRESET VALUES
CONTRAST
BRIGHTNESS
OSD CONTRAST
load from EEPROM
no
DEFLECTION
CONTROL
IC LOCKED
yes
DISV = 0
DISO = 0
DISPLAY NEW MODE ⁽¹⁾
DISO = 1
no
USER INPUT
yes
DISO = 0
RESPONSE TO USER INPUTS
(CONTRAST, BRIGHTNESS, OSD CONTRAST)
DISO = 1
DEFLECTION
CONTROL
IC LOCKED
yes
no
DISV = 1
MHA614
Fig.17 I²C-bus control flow.
32